Effect of additives and powder preparation techniques on PTCR properties of barium titanate

被引：24

作者：

Chatterjee, S

Stojanovic, BD

Maiti, HS

机构：

[1] Univ Estadual Paulista, Inst Chem, BR-14800 Sao Paulo, Brazil

[2] Univ Belgrade, Ctr Multidisciplinary Studies, Belgrade, Serbia

[3] Cent Glass & Ceram Res Inst, Kolkata 700032, W Bengal, India

来源：

MATERIALS CHEMISTRY AND PHYSICS | 2003年 / 78卷 / 03期

基金：

巴西圣保罗研究基金会;

关键词：

semiconducting barium titanate; PTCR effect; co-precipitation; solid-state reaction;

D O I：

10.1016/S0254-0584(02)00381-4

中图分类号：

T [工业技术];

学科分类号：

08 [工学];

摘要：

PTCR barium titanate has been prepared following two different powder preparation techniques: the solid-state reaction route and co-precipitation route for the comparison of results. The co-precipitation route produces better PTCR characteristics with low room temperature resistivity and better reproducibility of prepared samples. The effects of different concentrations of additives like donors, acceptors and excess titanium have been optimized to get good quality PTCR samples. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：702 / 710

页数：9

共 37 条

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SYNTHESIS REACTION OF METATITANATE BATIO3 .1. EFFECT OF THE GASEOUS ATMOSPHERE UPON THE THERMAL EVOLUTION OF THE SYSTEM BACO3-TIO2 [J].